Weighing-scale



(No Model.)

R. T. WADDLE.

WBIGHING SCALE.

VNo. 549,980. Ptented Nov. 19, 1895.

WITNESSES [NVE/V70@ UNITED STAT-Es 'PATENT OFFICE.

RICHARD T. VADDLE, OF DETROIT, MICHIGAN.

WEIGHING-SCALE.

SPECIFICATION forming part of Letters Patent No. 549,980, dated November19, 1895. Application tiled February 15, V189-5. Serial No. 538,491. (Nomodel.)

To @ZZ whom it may concern:

Be it known that I, RICHARD T. VVADDLE, a citizen of the United States,residing at Detroit, in the county of XVayne, State of Michigan, haveinvented certain new and useful Improvements in Veighing-Scales; and Ido declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to the letters of reference marked thereon,which form a part of this specification.

This invention relates to new and useful improvements in weighing-scales5 and it consists in the construction and arrangement of parts, ashereinafter fully set forth, and pointed out particularly in the claims.

The object of the invention is to produce a combined platform and scoopscales which shall be simple and inexpensive and in which thearrangement is such as to enable any article to be correctly weighed,either upon the platform or in the scoop, without the adjustment ofweights or the employment of springs or the setting of the scales toindicate a predetermined weight to be balanced by the article weighed.This obj ect is attained by the mechanism illustrated in theaccompanying drawings, in which- Figure 1 is a perspective view of myimproved scales. Fig. 2 is a central vertical section through the scoop,platform, and weighing mechanism. Fig. 3 is an enlarged transversesection, as taken on dotted line 3 3 of Fig. l.

Referring to the letters of reference, A designates the base of thescales, upon which is mounted an upright standard B, having at its upperend an overhangin g head b, provided with a vertical undercut waytherein, which receives the beveled edges of the vertical rod C, that isadapted to reciprocate vertically therein. The lower end of said rod Cextends into the base of the scales and is provided with a slotted eyetherein, which freely receives the free end of the lever D, the oppositeend of which is fulcrumed at c upon a rod crossing between the sides ofthe base. Fixed in said lever at a point remote from its point offulcrum is a transverse pin c, the extended ends of which pass throughslots in the converging ends of a series of short levers d, which arefulcruined at e near the corners of the base and provided withknifepoints t', upon which rest the depending studs f of the platform E,by which arrangement a weight placed at any point upon said platformwill always be brought to bear upon a certain fixed point upon the leverD.

Attached to the upper end of the vertical rod C by means of screws o isa vertical rackbar F, having diverging fingers at the top forthe supportof the scoop G and adapted to move vertically with said rod.

H designates a toothed segment which meshes with the teeth of therack-bar and is pivoted at n to the head o of the upright B. Extendingfrom said segment and iixed thereto is a depending arm H', which isprovided f at its lower or free end with an adjustable weight I that isscrewed thereon. With this arrangement, as above described7 it will nowbe understood that the placing of a weight either upon the platform orWithin the scoop will depress the rack-bar F, which, engaging thesegment II, will swing the weighted arm H outward in the arc of a circleconcentric with the point of pivot n until the weight thereon exertssufficient leverage force upon the rack-bar to balance the weight withinthe scoop or upon the platform of the scales, the leverage force of theweight increasing in regular ratio as the arm H' swings from a verticalto a horizontal position.

For the purpose of indicating the weight in pounds and ounces of anyarticle placed upon the scales there is employed a dial J, which issecured to the upright B, and upon the marginal face of which, arrangedin a circle, are the graduations indicating the ounces and pounds fromone ounce to the limit of pounds the scales will weigh. Passingcentrally through the dial and the head o of the upright and j ournaledtherein is a shaft h, carrying upon the end which projects through thedial an indicating-hand m and upon the other end, which projects throughsaid head, a pinion o", which meshes with said rack F above the segmentH and is rotated by the vertical movement of said rack, causing the handor indicator m to sweep the face of the dial and indicate thereon theweight of the IOO article placed on the scales. The engaging face of thesegment His equal to the circumference of the pinion fr, so that avertical movement of the rack F sufiicient to swing the weighted armfrom a vertical to a horizontal position will cause the hand m to makeone complete circuit of the face of said dial.

It will now be understood that in weighing articles on these improvedscales, as in a gro cery, for instance, no previous setting of thescales is necessary. All that is required is to place the articles inthe scoop or upon the platform and add thereto until the hand mindicates the weight desired, the weight I swinging outward to balancethe weight of the article on the scales, and again swinging downward toa vertical position when the article is removed therefrom, restoring`the scales to the normal position.

By the arrangement of the platform E and the series of levers thereundera greater weight may be weighed thereon than in the scoop, thegraduations upon the dial being so arranged to indicate the correctweight of the article whether placed in said scoop or on said platform.

Having thus fully set forth my invention, what I claim as new, anddesire to secure by Letters Patent, is

l. In a scale, the combination of the scale base and standard, thevertically movable rod supported in said standard, the rack and scoopsupported on said rod and movable therewith, the pivoted arm carrying aweight at its free end and having a toothed segment engaging said rack,the dial,the hand mounted on the shaft, passing through said dial, andjournaled in said upright, said shaft carrying a pinion which mesheswith said movable rack.

2. In a scale, the combination of the scale base and standard, thevertically movable rod in said standard, the rack bar and scoopsupported on said movable rod, the dial, the shaft carrying theindicating hand and having a pinion thereon which meshes with saidmovable rack, the pivoted arm havin a Weight thereon and provided with atoothed segment engaging said rack, the lever in the base engaging thelower end of said vertically movable rod and the platform mounted onsaid lever.

In testimony whereof I aiiix my signature in presence of two witnesses.

RICHARD ',l. IVADDIJE.

"Witnesses:

E. S. WHEELER, HORACE R. WHEELER.

